#include <algorithm>#include <cassert>#include <complex>#include <format>#include <iostream>#include <iterator>#include <string>#include <vector> void projector_example(){struct folk_info{unsigned uid;std::string name, position;}; std::vector<folk_info> folks{{0,"Ana","dev"},{1,"Bob","devops"},{2,"Eve","ops"}}; constauto who{"Eve"};if(auto it= std::ranges::find(folks, who,&folk_info::name); it!= folks.end())std::cout<<std::format("Profile:\n""    UID: {}\n""    Name: {}\n""    Position: {}\n\n",                                 it->uid, it->name, it->position);} int main(){namespace ranges= std::ranges;     projector_example(); constint n1=3;constint n2=5;constauto v={4,1,3,2}; if(ranges::find(v, n1)!= v.end())std::cout<<"v contains: "<< n1<<'\n';elsestd::cout<<"v does not contain: "<< n1<<'\n'; if(ranges::find(v.begin(), v.end(), n2)!= v.end())std::cout<<"v contains: "<< n2<<'\n';elsestd::cout<<"v does not contain: "<< n2<<'\n'; auto is_even=[](int x){return x%2==0;}; if(auto result= ranges::find_if(v.begin(), v.end(), is_even); result!= v.end())std::cout<<"First even element in v: "<<*result<<'\n';elsestd::cout<<"No even elements in v\n"; if(auto result= ranges::find_if_not(v, is_even); result!= v.end())std::cout<<"First odd element in v: "<<*result<<'\n';elsestd::cout<<"No odd elements in v\n"; auto divides_13=[](int x){return x%13==0;}; if(auto result= ranges::find_if(v, divides_13); result!= v.end())std::cout<<"First element divisible by 13 in v: "<<*result<<'\n';elsestd::cout<<"No elements in v are divisible by 13\n"; if(auto result= ranges::find_if_not(v.begin(), v.end(), divides_13);        result!= v.end())std::cout<<"First element indivisible by 13 in v: "<<*result<<'\n';elsestd::cout<<"All elements in v are divisible by 13\n"; std::vector<std::complex<double>> nums{{4,2}};#ifdef __cpp_lib_algorithm_default_value_type// T gets deduced in (2) making list-initialization possibleconstauto it= ranges::find(nums,{4,2});#elseconstauto it= ranges::find(nums,std::complex<double>{4,2});#endifassert(it== nums.begin());}

Profile:    UID: 2    Name: Eve    Position: ops v contains: 3v does not contain: 5First even element in v: 4First odd element in v: 1No elements in v are divisible by 13First element indivisible by 13 in v: 4